Key class Null safety

Key defines all the dimensions that identify this record as unique.


Key({String? effectiveConnectionType, String? formFactor, String? origin, String? url})
Key.fromJson(Map _json)


effectiveConnectionType String?
The effective connection type is the general connection class that all users experienced for this record. [...]
read / write
formFactor String?
The form factor is the device class that all users used to access the site for this record. [...]
read / write
hashCode int
The hash code for this object. [...]
read-only, inherited
origin String?
Origin specifies the origin that this record is for. [...]
read / write
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
url String?
Url specifies a specific url that this record is for. [...]
read / write


noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toJson() Map<String, dynamic>
toString() String
A string representation of this object. [...]


operator ==(Object other) bool
The equality operator. [...]